SWT 鼠标事件不灵名,老卡住怎么办?

[qq_37414354]

composite1.addMouseTrackListener(new MouseTrackListener() {
@Override
public void mouseHover(MouseEvent e) {
}
@Override
public void mouseExit(MouseEvent e) {
}

@Override
public void mouseEnter(MouseEvent e) {
Point p = Display.getCurrent().getCursorLocation();
String text = lblNewLabel1.getText();
System.out.println("p坐标"+p.x+" "+p.y);
new HoverHelpDialog(lblNewLabel1.getShell(), text).open(p.x, p.y);

}
});
如上,我加了mouseEnter事件,但是老是不灵名,经常卡死,怎样修复呢?